An accounting firm hired by Al Sharpton’s National Action Network found the civil-rights group in such financial disarray that it flunked its record-keeping — and may not even survive, The Post has learned.

The scathing critique was spelled out in a hard-hitting internal audit of NAN’s books, a copy of which was obtained by The Post.

"The organization has suffered recurring decreases in net assets — and has been dependent upon advances from related parties and the nonpayment of payroll tax obligations — to maintain continuity," the firm KBL concluded in an April 2 audit of NAN’s 2008 financial records, the most recent available.